package com.dbTool.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringUtil implements ApplicationContextAware {

  private static ApplicationContext applicationContext = null;


  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

    if (SpringUtil.applicationContext == null) {
      SpringUtil.applicationContext = applicationContext;
    }
  }


  //获取applicationContext

  public static ApplicationContext getApplicationContext() {
    return applicationContext;
  }


  //通过name获取 Bean.

  public static Object getBean(String name) {

    return getApplicationContext().getBean(name);

  }


  //通过class获取Bean.

  public static <T> T getBean(Class<T> clazz) {

    return getApplicationContext().getBean(clazz);

  }


  //通过name,以及Clazz返回指定的Bean

  public static <T> T getBean(String name, Class<T> clazz) {

    return getApplicationContext().getBean(name, clazz);

  }

}